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<title>The Java Language Specification The Package java.io </title>
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<center><h1>22.19 The Class <code>java.io.FilterOutputStream</code></h1></center>
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A <code>FilterOutputStream</code> contains some other output stream, which it uses as its
basic sink of data, possibly transforming the data along the way or providing additional
functionality. The class <code>FilterOutputStream</code> itself simply overrides all
methods of <code>OutputStream</code> with versions that pass all requests to the contained
output stream. Subclasses of <code>FilterOutputStream</code> may further override some of
these methods and may also provide additional methods and fields.
<p><pre><a name="29651"></a>public class <code><b>FilterOutputStream</b></code> extends OutputStream {
<a name="29652"></a> protected OutputStream <code><b>out</b></code>;
<a name="29653"></a> public <code><b>FilterOutputStream</b></code>(OutputStream out);
<a name="29654"></a> public void <code><b>write</b></code>(int b) throws IOException;
<a name="29655"></a> public void <code><b>write</b></code>(byte[] b)
<a name="32433"></a> throws IOException, NullPointerException;
<a name="29656"></a> public void <code><b>write</b></code>(byte[] b, int off, int len)<br>
throws IOException, NullPointerException,
<a name="32429"></a> IndexOutOfBoundsException;
<a name="29657"></a> public void <code><b>flush</b></code>() throws IOException;
<a name="29658"></a> public void <code><b>close</b></code>() throws IOException;
<a name="29659"></a>}
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<p><font size=+1><strong>22.19.1 </strong> <code>protected OutputStream <code><b>out</b></code>;</code></font>
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The output stream to be filtered.
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<p><font size=+1><strong>22.19.2 </strong> <code>public <code><b>FilterOutputStream</b></code>(OutputStream out)</code></font>
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This constructor initializes a newly created <code>FilterInputStream</code> by assigning the
argument <code>out</code> to the field <code>this.out</code> so as to remember it for later use.
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<p><font size=+1><strong>22.19.3 </strong> <code>public void <code><b>write</b></code>(int b) throws IOException</code></font>
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This method simply performs <code>out.write(b)</code>.
<p><a name="29671"></a>
Implements the abstract <code>write</code> method of <code>OutputStream</code> <a href="javaio.doc13.html#29411">(§22.15.1)</a>.<p>
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<p><font size=+1><strong>22.19.4 </strong> <code>public void <code><b>write</b></code>(byte[] b)<br>throws IOException, NullPointerException</code></font>
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This method simply performs <code>out.write(b)</code>.
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Overrides the <code>write</code> method of <code>OutputStream</code> <a href="javaio.doc13.html#29419">(§22.15.2)</a>.<p>
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<p><font size=+1><strong>22.19.5 </strong> <code>public void <code><b>write</b></code>(byte[] b, int off, int len)<br>throws IOException, NullPointerException,      IndexOutOfBoundsException</code></font>
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This method simply performs <code>out.write(b,</code> <code>off,</code> <code>len)</code>.
<p><a name="29685"></a>
Overrides the <code>write</code> method of <code>OutputStream</code> <a href="javaio.doc13.html#29426">(§22.15.3)</a>.<p>
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<p><font size=+1><strong>22.19.6 </strong> <code>public void <code><b>flush</b></code>() throws IOException</code></font>
<p>
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This method simply performs <code>out.flush()</code>.
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Overrides the <code>flush</code> method of <code>OutputStream</code> <a href="javaio.doc13.html#29440">(§22.15.4)</a>.<p>
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<p><font size=+1><strong>22.19.7 </strong> <code>public void <code><b>close</b></code>() throws IOException</code></font>
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This method simply performs <code>out.close()</code>.
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Overrides the <code>close</code> method of <code>OutputStream</code> <a href="javaio.doc13.html#29445">(§22.15.5)</a>.<p>
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<font size=-1>Java Language Specification (HTML generated by Suzette Pelouch on February 24, 1998)<br>
<i><a href="jcopyright.doc.html">Copyright © 1996 Sun Microsystems, Inc.</a>
All rights reserved</i>
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Please send any comments or corrections to <a href="mailto:doug.kramer@sun.com">doug.kramer@sun.com</a>
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